Ventilator



, Sheets-Sheet J. H. M DER MEN T 'VENTILATOR Filed Aug. 21, 19:55

Oct. 19, 193?.

v LATTORNEYQQ,

Oct. 19, 1937. v J. HJMODERMENT 2,096,123

' VENTILATOR 1 Filed Aug. 21, 19:55 7 Sheets-Sheet e" I 2/ I INVENTOR.

v f JH WJJMWMJ. BY I 7 ATTORNEY;

Oct. 19, 1937.

J. H. McDERMENT VENT ILATOR Filed Aug. 21, 1955 7 Sheets-Sheet 7 &

INVENTOR. H. fizfl mw/ BY ATTORNEY. I

' Patented 19,

spamming assess amuse l This-invention relates toaventllatorand par.-

ticularly to that general type of ventilator shown in United, StatesPatent to Dexter. No. 1,611,005.

Broadly stated, the objector the inventiongis to .5 provide improved daml' mounting and control mechanism. More specifically.an object is toprovide a dampermounting-including a parallelogram linkage and a damperactuator comprising areciprocable element connected to the damper I 10through a toggle linkage. g-A further objectisto 'provide formountingthe damper on a parallelogram 'linka ein suchv manner that the damper Imay be swung by the .above mentioned toggle link- 7 age to a positionabove the pivotmounting of the' l5 upper ends of the linkslconstituting-the'parallelogram linkage. A further, object is to-provideimproved actuating means for the above mentioned sliding bar, such meanemboib'in's a compound mechanism including, a' winding drum pulley gosystem connected in operativerelationwhereby to multiply the mechanicaladvantage of the actuating mechanism and at the same time providei'orstraight-line movement ,of the slidable-bar and for-remote control fromany desired position.

: Other and more limited objects will become apparent lromthe followingdescription when read in connection with the accompanying drawingswherein Fig. 1 isa vertical transverse section 7 through a deviceembodyin the inventiomland corresponding substantially to the, sectionon the line l-' l of Fig; 3a; Fig.2is anenIarged detaiJ sectioncorresponding substantially to the line of Fig 3; Figs. 3 and3acohstitute a longi- M tu dinal vertical section-:through a.sufllciently large portion of the devicetoindicate the essen- Ltialmechanism it being understood that lthe mechanisms of Fig. 3a may berepeated indefinitely, only one latch mechanism. however, being Irequired for the entirelength; no matter of what tion correspondingsubstantially to-the line 4-4 of Fig. 1; Fig 5 is a fragmentary verticalsection ,Fig. 8 is,a,fragmentary plan view thereof with 8 is a detailsection corresponding to theline of Fig. '7; andFig; 9 is a fragmentarydetail; sec tionvof a still further modified form, being canfined to asubstitute for that portion of the actuating mechanism appearing at thelower right hand corner 01m 7. I 1

V By reference to Fig.1, it will beseentnatimy improved ventilator isapplicable to,-for1example,

55s. building root indicated by the numeral It and a connected togetherby upper bight portio I extendingnsupportinggbars ,I Sare secured to theY linksxlfl outside theedges of the'damper-"lt eilfc extefnt; Figs. 4and 4axmake up a horizontal secv showing amodifled form of actuatingmechanism;

portions-broken away; Fig. '7 1a-a;1'ragm'entary" vertical section of afurthermodiiledform;. 2l3 ig.

carrying upwardly converging sheetmetal ele, nents 'Jhhaving; theirupper edgessec'ured togetheratintervals by bars I! extending -there Iacross and riveted theretoas well "asto bowslll j having lowerportions,lyingalong'the elementsil. ii a jacent theiupper edgesof theelements bight portionao'f theelements ili mergesq legs thereof byflattened corners to .whic cured a ridgelroll- 4., Upwardly; and. o

bows J3 and providesu o for t el .of baflle elements which; are attacheda lower edgesjtolthe elements i3 in vany; ui ble manner. As will beclear from Fig. 1,: ments I l terminate-in vertical portions I I whichthe outer edgesofadamper [8 are dapted' to rest. ,Securedtothe,dampergit ,and

ing thereacross atintervals are straps it; ends of which are pivotallyconnected lin I r a The upper ends of the :linkslfliare pivotedtothe',

bows n, as indicated; t 2l.-;-It "will noted Y iathatthepoints 2| areabove hedamper l the same, is closed but. that the position tivelyremoves the ssm links from heIpathoi':

no n a o lt e' ivo i t-$2 SRieIerring nowrparticularly, to,:Figs;; 3

,- and: 4 and .411; .it be seen; that ,certai .oi the I bar 23- are Y vll .link w ch is connected by a suitable br to the-,bottpin of'thedamper "l8,

vious that, by reciprocating; the slidl ar .the. linkage "can be causedto move, to the dott'e line position indicated in 3 a wherein lthe 40damper" ispositioned above the pivot t 21'.

In Figs 2 to 4a I have shown a-form of-ac't, to

101 the sliding "bar 23" which comprises a. ile element 2 1 connectedat. .to the bar 13 and tending tangentially, to a sec r-' and verticallyextending portionsZpositioned-adup n e 1 the-damper and permits theilatterto sw a g;

' 01 s latch eleme' wardly to a. convenient position. r .n A'latch'meanslaprbvlded for the-bar P '23 in 5 position to'cause thedamper I. tomIcopen position. Such latchmay tnkethe form m mmmg element 43carrledib'y some fixed ":parto! thedevlce aa, tqr example; one a m ibnly u a. connector lfor the egble 36 but also a'cmou'ntlng tornsh'eave'1! about which the cable extends andlrom whlch 1t Passes tonnath'etsheave l0 and'th ence downmcuntin bracket hichla' ln by'-'the1b'a'r 23im'd ajc m receiving transverse member; 12. f This latch lsjelmllarthat'shown in' my copengllnggeppllcatlon No. 727,306, filed May 24,1931N 2,072,461, patented March 193'],v ind per to latch upcnwmotion o! thebar 28 to latch and the latch element engagement and is dismissed by ination otthegelement ll alter the same does}no t per-9e formi. petrolthis invention and fully described in, mysald 'copendlnl abpllcdtlomltappearsiunnecemry' a 1 rererenwnumerm 'lndlc'ate 1 parts "im n ai'ecommon" to me form 'of'the lnvea'ztlon' jiur deecribed and wh'erelnthemodmed elementl ere indicated by bthe'rretere'nce chm-acme.-

be "seen-that -tlzelxlldlng bar 1 it ai eeve u dver'wl-i lch auesa-nexble'element uI- wmeh lssecur'ed 'atbneend at the point; to and waneother endto' c'lmcket I v wheel llifat $he;polnt;* element 4 .adajat'edtogbe wound on drum ll $096,188" I n fup udl me mime o!reactlontmnamlttedthrw hthelmk In lieu ot the elements "I; ll, ll employa 'post to whlchilreilecured I elements II provldedwlth journcleq in I athresdedelementl I upon which an internally threaded, 51mm block 111mm'Pmlectlon II to'whlch lakplvohlly {While 1 have shown 2mm pment ti; ct.my lnv'en tlon;

lt understoqd-thnt to the V detallco! the discloemebht' :with fihesplrltjend of the ma iehunbr 1. In A H n 1,- to

damper ndented for moving *puulel as we 0mm ma:m; mu

oomprmng mppcztlnc mum curled; walla. pflrlllel link;

andtc midway-cm} by z tatlbn' b! "the" mrocketiwheel ll 01' r'sprocketchain I l extexidlljztn a. position fer con'venientacceuf'lbe m I.

11y extendingmama mv spaced -ifiectedlmere 6o bracket I! 'and plvotslly5 connected oiizh themeamnio:

enclfltp an actuatingmg latchlngges'lemh catedl i generally by r theurneral l1 emmy's'l is slldable on ma n w ounted on anyflxedelement.lot-milieu!!! mum to the 1 bu v-qia The element i'l' ttke-thc fdm shanedlemen't u mung-las gna n m and oucwagdlyby the lament Ilse Projection IIk plvqt 'ed'dndthronchwhlch {t H yengeglngthecameto extent but not $0 a,sum'clently uestextent f'tq'mcterl'clly v m vnna v 02M mw' 1 b l v wn'ls lp on the d I n y W wi ngmennae along le ,the1orce; required z otmzjndstuana mm. [L

galdnnkunonld portlng "means, n "cipl'ocgtlonina M Mm @v mmm inactuating relation to said damper, a flexible element connected to saidsliding bar, a lever pivoted at a point fixed with respect to said firstmentioned means, a sector-shaped drum carried by said lever andconnected to said fiexibleelement in relation to be wound thereon, apulley system connected to said lever radially outwardly of said sectorand adapted to actuate the same and latch means for holding said damperin one position.

5. In a ventilator, in combination with means defining an opening, adamper adapted to close said opening, supporting means, a parallelogramlinkage connecting said .damper with said supporting means, a slidablebar mounted for reciprocation in a direction substantially parallel to isaid damper, a link'connecting said sliding bar in actuating relation tosaid damper, a flexible element connected to said sliding bar, a leverpivoted at apoint fixed with respect to said first mentionedmeans, asector-shaped drum carried v by said lever and connected .to saidflexible element inrelation to be wound thereon, a pulley systemconnected to said lever and adapted to actuate the sameand latch meansfor holding said damper in one position. p

' 6. In a ventilator, in combination with a damper and means defining anopening adapted'to be closed thereby, a parallelogram linkage mountingsaid damper with respect to said opening, a'bar mounted for slidingmovement substantiallypare allel to said damper, a rod extendingat'substan- I tially right angles to said bar, an actuating elementmovable longitudinally of said rod, a toggle link connecting saidactuatingelement with said bar and means for moving said actuatingelement V longitudinally of said rod.

7. In a ventilator, in combination with a damper and means defining anopening adapted to be closed thereby, supports adjacent said opening, la parallelogram linkage pivotally connecting said supports with saiddamper, asliding bar movable with respect to said damper, link meanspivotally connecting said sliding bar and saiddamper, a flexibleelement,means connecting said element to said sliding bar, drum means mounted infixed relation to said first means, said flexible element being securedto ,said drum means in relation to be wound thereon, means for causingrotation of said drum means, and latch means for holding said damper inat least one position.

8. In a ventilator, in combination with adamp er and means defining anopening adapted tobe closed thereby, supports adJacent'said opening; a

parallelogram linkage lying outside the path ofsaid damper and pivotallyconnecting same to said supports, a sliding bar movable with respect tosaid damper, a link pivotally connecting said bar and said damper, aflexible element, means connecting said element tosaid sliding bar inactuating relation thereto, drum means mounted in fixed relation to saidfirst means, said flexible element being secured to said drum means inrelation to be wound thereon, means for causing rotation of saiddrummeans, and latch means I for holding said damper in at least oneposition.

Jams 11. MoDERMENT.

